Indicator for oil-pumps.



G. W. MORRIS.

INDCATOR FOR OIL PUMPS.

APPLICATION FILED JAN, 15. 1916.

Patented Apr. 15,1919.

W/ r/ilzwam parts needing lubrication. This is the arrangement when the indicator'is so connected as to have the streamof oil fromthe' pump pass therethrough, as when. the..p1pe. connection 19 is connected with the'pum'p and the pipe connection 22 is connected wlth the oil distributing system. When, how-" e r, h p mpis. connected directly with nection 14 merely forms a blindlea'd'therefrom,.. an. ordinary. screw plug, 13; threaded in, tlie.passage;way 2L; The pressure of: the

lubricant. in thew-chamber lBi-during the: im-

pulse stroke of. a plunger oil pump or dur- 'the', operation lof'- a. rotary oil pump; is

.sufil'clenti'toimove it. outwardly, against its 7 seat 15,5111: when. such pressure SllbSldBS the plunger. is .moyedl, inwardly "by the action of a. springf23 which is. preferably contained ithin abore of; the: plungerv and! beansat one end... against; the front. plate .10 and: at the v other end against. a, flange ofaa. plunger stem 22L} The stem. 24 bears against the end of the-leoreof. the plunger toz-give the plunger the, tendency to, movetrearwardly, while the. other. end fits, in an: opening through, the, front plate, 10, and in the rear position of the plunger lies approximately flush with the. face of the .front plate, while ihztha forward position of: the plunger. it is projectedifrom. the. frontfplate in the manpump aer. shown, i Fig. 2 tot constitute. asignal or indicating meansto show; when. the: 011 is properly'performing; its functions.

Although the seating: of the. .valvelike headofthepliinger on, its val-veseat is provided to, prevent. the. escape of oilv under pressureibetween the plungerand its cylinderg partieu lanly whenin use with. a rotary oilipump, or otheroil pump supplying continuous'pressure,t provision is made for Cliiaihingoillfrom the casingibefore it reaches the openinglin" the: front plate should. there be such; a. leakages Thusthe, casing 11 is provided with, an enlargedchamber 25 just liehind thegfront plat'e, andjl'eadlngl from the bottom thereofilis inclined nipple 2,6 containing a passagewayv forming a drain openleonvenient manner w th admin pipe 27,

111g, Thisni'pple may beconneeted in any though itis preferred to reduce'the end; of

the nipple so that it'may be freely inserted iin the-end' ofi the d'rain pipe without. the

2 pin 28 passingfhori'zontallythrough open-' necessity for threaded connection, f a cotter ings theend' of the drain-pipe andl'in the en'dof the nipple servingzto liOld'tllG, parts place. In, any event there is no material flow of. oilithrouglr the drain, connection, and

' the l'oos'efit ofthe,inclined overlapping; parts will begsulhcient to conduct it without leak- 7 age, while the hori'zontalposition of. the cotten pin will prevent. the" leakage through openings provided "for'itf The drain ipe 27 upon the cowlboard or dash of the automop v bile so that it, and the protruding plunger the-oil distributing system and",the-.pipe eon stem are the only parts visible and the movements of the plunger incident to the pressure of the flow of lubricant when the oil pump isoperating properly are clearly indicate by the movementsof the plunger stem through the front plate. The plunger stem 'will: reciprocate witlteach impulse of the oil pumpwhen theplunger type-of. oil pump is used. a11d w ill; remainin its projected position as, long as pressure is maintained in the lubricat ng system by: theproper operation of the pump when a rotary Oll pump I is used,.and in the dark when. the position of the .plungerstem can not. be seen it can be felt so that it constitutes a warning signal by which the driver is notified of the failure of thelubricating system for any reason whether it is through the exhaust of; the supply of. lubricant or. through the failure of the pump. to operate for any. cause.

7 in the lubricating; system, and the plunger is caused. to intercept the through passageuuty between. the inlet connection; and; the outlet connection in order toinsurethe movement of the plunger-eventhough. thereis only a light pressure 'in the. lubricant system, as

V Whenthe. engine is idling or running slowly.

The pressure in the lubricating system will ordinarily.v vary with the speed of operation of the engine and. when the engmels runnmg at high speed and'the pressure is, there fore, fexcessive, especially when a rotary. pump 1s employed,,1t 1s posslblethat there woulch'be a leakage of. oil anound the plunger but for. the presence ofjtliezconical. valve on the end off the plunger tightly seating on its valve seat, If duringthe reciprocationsof fthe plunger,when operating with. a plunger pump, there is a. leakage of oilpast the plunger, or if the presence of the Valve is not suflicient toprevent. a slightleakage around the plunger wheln used with afrotary pump the drain connection; provided will prevent the appearance of oil onthe front plate, for such oil asgpasses the plunger will be immediately collected, in the drain chamber and y will be conducted, away through the drain pipe. The enlargement infthe front end of the cylinder here has a further advantage in that it permits the front end of the plunger in each stroke thereoft'o travelbeyondtlie end of metal which necessity for the me of it is tight and then clamp Inlet pipe and the casing, but avoiding the a union! joint, it

bemg possible to turn the 7 onto the end of the pipe connection-=19 until the sameto' the caslng by means of -the clampingbolts 17;

the drain pipe avoids. the'necessity 7 it being Furthermore the cotter, pin connection {foril o 'j he use ofa 11111011 connectiontherein. it f The plunger stem "is made separate from the plunger as a matter} of convenience,gand;

to reducethe cost of,manu facture,-though 11; remains in contacttherewith and may be positively connected therewith if desired; separate, however, accurate'corre-f spondence between the plunger stem open;

ing in the front plate and the axis ,oflthe cylinder is made unnecessary, as wellas ac manufacture and is" attention to maintain H 7 'tion, and though the detailsoff'constru'ction as shown and described; are preferredlthep curate correspondence between thefaxis of the plunger stem and the axis of the plunger, and the careful fitting: ofthe parts,gthe separate construction allowing the plungerstem to be self alining. a c

The high standardsetifor automobile ac;- cessories makes noisy operation seriously ob jectionable, and inthe present construction" this is eliminated, :the forward movement '7 of the plunger being cushionedby the action; 4

of the spring so that the" valverpe'rhaps doesf not entirely reachitsseat beforeithe endof, each impulseifromthepump ,'wli1le the rearward movement of the plunger-is cushioned by its engagement with theileathergasket' 20. The operation of the indicator 1s, ;th ,ervef0re,,

click. a

While being highly; eflicint for "purposes intended the. device is" inexpenslve to d e req i f-in rn :it. in operative condi may be modified in various respects apparent (iapiu to those skilled inithe artwitho'ut departing from the spirit and scope of the invention" What I claim as new anddesire to secure" by Letters Patent is:

of this patent inayjge dbtltnedforfl ve" in oilfa nd- "particles connectingplate 18 not only convenient and inexpensive connectingpl'ate i n indicator for oil pumps the? i like, comprising a casing forming a cylinder seat between said enlargement and the bore of the cylinder, aplunger fitting in the bore of l the cylinder and having an enlargement on ;one end-f; or-ming a valve adapted to'b'ef seated on the valve seat, an oil. pump connection communicating with 'the'nterlor ot'the en-J i i a frontiplateonjthe largenient of the casing,

, "end ofthecasing,therebeinga recess in the other "end of the plunger-,3 flanged: plunger stem' withi'nthe re'cess (end:againstthe"plungerrwith its other end q passing-tlfrough the front plate,and aspring plunger? stemsand bearing i frorit platlerespectively;' i 1 2;; Ari oil. pumpindicator, comprising a casingforminga cylinder, fa plunger fitti'ng therein, alplatesecured; to, the ing'fa gasket between the plate and the end ofthecasing and. adaptedto be engaged by the plunger, a ump connection on theplate, passing through" "and afstemfor the plunger" the casing? j y ,fvjn r 3.. An indicator foroil pumps, a casing forming a cylinder with drain nipple leading from' the front end thereof, a, plunger-flitting in "the casing, a pumpconnection at charm end of the cylinder, a stem for the plu'nger' passing through an opening in the casing," scoping the end of the drain nipple, and a pin passing-horizontallythrough the drain pipe matte nipple V a I 4 "An indicator for oil pumps,

a casing forming a 'cylinder with V mentin'thebore at each mid thereof, a front plate on the front end of the casing,, a plunger fittin'g inthe cylinder with a conical valve on its end rear. end "of the cylinder, plunger passing through V f front'plate, 'allspringbearing on the plunger tending 'to' move -it rearwardly, ears pro- *jectingirom the,.rear endof the casing;

mpr i an nclined m si an enl'argea stem ,foi the;

a connecting: plate at therear endo'f the" quiet and withoutan objectionable metallic easing, leather gasket between the coir-,-

ejecting, from the rear e'n'dj of the casing,' 5 and extending into the rear enlargementfof the"boreof the: casing to have the end 0t the; plungerstrike t ereagainst, bolts connecting 5 "th ,casing, s'aidgkconnectingfplate having-a pump connection l threaded "platei 1; c v, V, I Intestimonywhereof, Iafiix my signature, in. presence oftwo witnesses. v

i a. said, pe ng Witnesses: 1

KATHERINE HOLT,

R. Q'CALDYVELL. g

c! and bearing-at one endof thecas 1 sq k drainpipeiteleadapted'to be seated at the 1 a anopening inI'the I e gconnectin'g plate withl'thenears of; thek, V n

f'the connecting I}? v GEORGE w. onnisri mmbyf sink-easing the fountain signer arming i '7 a 

